Desktop reveal expansion

ABSTRACT

A dual-screen user device and methods for revealing a combination of desktops on single and multiple screens are disclosed. Specifically, a determined number of desktops is displayed to at least one of the screens of the device conditioned upon input received and the state of the device. Where a screen of the device is determined to be inactive, the desktop is not displayed to the screen, but is stored in a virtually displayed state by the device. Upon receiving input that the inactive screen is active, the device can actually display the desktop to the screen.

CROSS REFERENCE TO RELATED APPLICATION

The present application claims the benefits of and priority, under 35U.S.C. §119(e), to U.S. Provisional Application Ser. Nos. 61/389,000,filed Oct. 1, 2010, entitled “DUAL DISPLAY WINDOWING SYSTEM;”61/389,117, filed Oct. 1, 2010, entitled “MULTI-OPERATING SYSTEMPORTABLE DOCKETING DEVICE;” 61/389,087, filed Oct. 1, 2010, entitled“TABLET COMPUTING USER INTERFACE.” Each of the aforementioned documentsis incorporated herein by this reference in their entirety for all thatthey teach and for all purposes.

BACKGROUND

A substantial number of handheld computing devices, such as cellularphones, tablets, and E-Readers, make use of a touch screen display notonly to deliver display information to the user but also to receiveinputs from user interface commands. While touch screen displays mayincrease the configurability of the handheld device and provide a widevariety of user interface options, this flexibility typically comes at aprice. The dual use of the touch screen to provide content and receiveuser commands, while flexible for the user, may obfuscate the displayand cause visual clutter, thereby leading to user frustration and lossof productivity.

The small form factor of handheld computing devices requires a carefulbalancing between the displayed graphics and the area provided forreceiving inputs. On the one hand, the small display constrains thedisplay space, which may increase the difficulty of interpreting actionsor results. On the other, a virtual keypad or other user interfacescheme is superimposed on or positioned adjacent to an executingapplication, requiring the application to be squeezed into an evensmaller portion of the display.

This balancing act is particularly difficult for single display touchscreen devices. Single display touch screen devices are crippled bytheir limited screen space. When users are entering information into thedevice, through the single display, the ability to interpret informationin the display can be severely hampered, particularly when a complexinteraction between display and interface is required.

SUMMARY

There is a need for a multi-display handheld computing device thatprovides for enhanced power and/or versatility compared to conventionalsingle display handheld computing devices. These and other needs areaddressed by the various aspects, embodiments, and/or configurations ofthe present disclosure. Also, while the disclosure is presented in termsof exemplary embodiments, it should be appreciated that individualaspects of the disclosure can be separately claimed.

A method of displaying a desktop on a multi-screen device, comprising:receiving a first predetermined input that represents an instruction toreveal a desktop on a first screen of the multi-screen device;determining a first desktop to display on the first screen; determininga second desktop to display on a second screen of the multi-screendevice; and responding to the first predetermined input with an outputthat causes the first desktop to be displayed on the first screen andwhich also causes the second desktop to be at least one of (i) actuallydisplayed on the second screen and (ii) virtually displayed on thesecond screen.

A non-transitory computer-readable medium having stored thereoninstructions that cause a computing system to execute a method, theinstructions comprising: instructions configured to receive a firstpredetermined input that represents an instruction to reveal a desktopon a first screen of the multi-screen device; instructions configured todetermine a first desktop to display on the first screen instructionsconfigured to determine a second desktop to display on a second screenof the multi-screen device; and instructions configured to respond tothe first predetermined input with an output that causes the firstdesktop to be displayed on the first screen and which also causes thesecond desktop to be at least one of (i) actually displayed on thesecond screen and (ii) virtually displayed on the second screen.

A multi-screen user device, comprising: a first screen including a firstdisplay area; a second screen including a second display area; a hingeconfigured to connect the first screen with the second screen; a firstsensor configured to produce a first signal indicative of a position ofthe hinge; a second sensor configured to produce a second signalindicative of a relative position of the first screen and the secondscreen; and a computer-readable medium having instructions storedthereon that include: a first set of instructions configured todetermine, based at least partially on the first signal, whether thehinge is in a first position or second position; and a second set ofinstructions configured to determine, based on the first signal, whetherto actually display or virtually display a second desktop on the secondscreen.

The present disclosure can provide a number of advantages depending onthe particular aspect, embodiment, and/or configuration. Currently, theconsumer electronics industry is dominated by single-screen devices.Unfortunately, these devices are limited in the manner in which they canefficiently display information and receive user input. Specifically,multiple applications and desktops cannot be adequately shown on asingle screen and require the user to constantly switch betweendisplayed pages to access content from more than one application.Additionally, user input devices such as keyboards, touch-sensitive orcapacitive displays, and hardware interface buttons are usually reducedin size to fit onto a single-screen device. Manipulating this type ofdevice, and being forced to switch between multiple applications thatonly use one screen results in user fatigue, frustration, and in somecases repetitive motion injuries.

Recently, dual-screen devices have been made available to consumers ofelectronic devices. However, the currently available dual-screen deviceshave failed to adequately address the needs of the consumer. Althoughthe devices include two screens in their design, they tend toincorporate the negative limitations of their single-screencounterparts. In particular, the typical dual-screen device limits theuser interface to a particular screen, in some cases only providing akeyboard, or touch-sensitive/capacitive display, on one of the screens.Moreover, the management of the device's applications and desktops islimited to the traditional concepts of single-screen content switching.The present disclosure addresses the limitations of the traditionalsingle/dual-screen devices and provides advantages in display, input,and content management.

At least one embodiment of the present disclosure describes amulti-screen device and methods for managing the display of content thatallows the user a greater degree of creative latitude when operating thedevice. In particular, when a device is running an application or groupof applications, the device is capable of detecting a user gesture inputthat can reveal a desktop on multiple screens of the device. Thisdesktop can show a representation of different applications that theuser can select. From this desktop, a user is able to launchapplications or navigate between multiple desktop pages, including thosethat are displayed and those that are not. A user, or the device itself,may choose how and when to initiate the reveal desktop expansion, whichmay be determined by, but not limited to, a specific input detected, anoutput from another process, program or hardware logic, softwarecontrol, or combination thereof. The management of the displayeddesktops may be directed by the device or the user. These and otheradvantages will be apparent from the disclosure. These and otheradvantages will be apparent from the disclosure.

The phrases “at least one”, “one or more”, and “and/or” are open-endedexpressions that are both conjunctive and disjunctive in operation. Forexample, each of the expressions “at least one of A, B and C”, “at leastone of A, B, or C”, “one or more of A, B, and C”, “one or more of A, B,or C” and “A, B, and/or C” means A alone, B alone, C alone, A and Btogether, A and C together, B and C together, or A, B and C together.

The term “a” or “an” entity refers to one or more of that entity. Assuch, the terms “a” (or “an”), “one or more” and “at least one” can beused interchangeably herein. It is also to be noted that the terms“comprising”, “including”, and “having” can be used interchangeably.

The term “automatic” and variations thereof, as used herein, refers toany process or operation done without material human input when theprocess or operation is performed. However, a process or operation canbe automatic, even though performance of the process or operation usesmaterial or immaterial human input, if the input is received beforeperformance of the process or operation. Human input is deemed to bematerial if such input influences how the process or operation will beperformed. Human input that consents to the performance of the processor operation is not deemed to be “material”.

The term “computer-readable medium” as used herein refers to anytangible storage and/or transmission medium that participate inproviding instructions to a processor for execution. Such a medium maytake many forms, including but not limited to, non-volatile media,volatile media, and transmission media. Non-volatile media includes, forexample, NVRAM, or magnetic or optical disks. Volatile media includesdynamic memory, such as main memory. Common forms of computer-readablemedia include, for example, a floppy disk, a flexible disk, hard disk,magnetic tape, or any other magnetic medium, magneto-optical medium, aCD-ROM, any other optical medium, punch cards, paper tape, any otherphysical medium with patterns of holes, a RAM, a PROM, and EPROM, aFLASH-EPROM, a solid state medium like a memory card, any other memorychip or cartridge, a carrier wave as described hereinafter, or any othermedium from which a computer can read. A digital file attachment toe-mail or other self-contained information archive or set of archives isconsidered a distribution medium equivalent to a tangible storagemedium. When the computer-readable media is configured as a database, itis to be understood that the database may be any type of database, suchas relational, hierarchical, object-oriented, and/or the like.Accordingly, the disclosure is considered to include a tangible storagemedium or distribution medium and prior art-recognized equivalents andsuccessor media, in which the software implementations of the presentdisclosure are stored.

The term “desktop” refers to a metaphor used to portray systems. Adesktop is generally considered a “surface” that typically includespictures, called icons, widgets, folders, etc. that can activate showapplications, windows, cabinets, files, folders, documents, and othergraphical items. The icons are generally selectable to initiate a taskthrough user interface interaction to allow a user to executeapplications or conduct other operations.

The term “display” refers to a portion of a screen used to display theoutput of a computer to a user.

The term “displayed image” refers to an image produced on the display. Atypical displayed image is a window or desktop. The displayed image mayoccupy all or a portion of the display.

The term “display orientation” refers to the way in which a rectangulardisplay is oriented by a user for viewing. The two most common types ofdisplay orientation are portrait and landscape. In landscape mode, thedisplay is oriented such that the width of the display is greater thanthe height of the display (such as a 4:3 ratio, which is 4 units wideand 3 units tall, or a 16:9 ratio, which is 16 units wide and 9 unitstall). Stated differently, the longer dimension of the display isoriented substantially horizontal in landscape mode while the shorterdimension of the display is oriented substantially vertical. In theportrait mode, by contrast, the display is oriented such that the widthof the display is less than the height of the display. Stateddifferently, the shorter dimension of the display is orientedsubstantially horizontal in the portrait mode while the longer dimensionof the display is oriented substantially vertical. The multi-screendisplay can have one composite display that encompasses all the screens.The composite display can have different display characteristics basedon the various orientations of the device.

The term “gesture” refers to a user action that expresses an intendedidea, action, meaning, result, and/or outcome. The user action caninclude manipulating a device (e.g., opening or closing a device,changing a device orientation, moving a trackball or wheel, etc.),movement of a body part in relation to the device, movement of animplement or tool in relation to the device, audio inputs, etc. Agesture may be made on a device (such as on the screen) or with thedevice to interact with the device.

The term “module” as used herein refers to any known or later developedhardware, software, firmware, artificial intelligence, fuzzy logic, orcombination of hardware and software that is capable of performing thefunctionality associated with that element.

The term “gesture capture” refers to a sense or otherwise a detection ofan instance and/or type of user gesture. The gesture capture can occurin one or more areas of the screen, A gesture region can be on thedisplay, where it may be referred to as a touch sensitive display or offthe display where it may be referred to as a gesture capture area.

A “multi-screen application” refers to an application that is capable ofproducing one or more windows that may simultaneously occupy multiplescreens. A multi-screen application commonly can operate insingle-screen mode in which one or more windows of the application aredisplayed only on one screen or in multi-screen mode in which one ormore windows are displayed simultaneously on multiple screens.

A “single-screen application” refers to an application that is capableof producing one or more windows that may occupy only a single screen ata time.

The term “screen,” “touch screen,” or “touchscreen” refers to a physicalstructure that enables the user to interact with the computer bytouching areas on the screen and provides information to a user througha display. The touch screen may sense user contact in a number ofdifferent ways, such as by a change in an electrical parameter (e.g.,resistance or capacitance), acoustic wave variations, infrared radiationproximity detection, light variation detection, and the like. In aresistive touch screen, for example, normally separated conductive andresistive metallic layers in the screen pass an electrical current. Whena user touches the screen, the two layers make contact in the contactedlocation, whereby a change in electrical field is noted and thecoordinates of the contacted location calculated. In a capacitive touchscreen, a capacitive layer stores electrical charge, which is dischargedto the user upon contact with the touch screen, causing a decrease inthe charge of the capacitive layer. The decrease is measured, and thecontacted location coordinates determined. In a surface acoustic wavetouch screen, an acoustic wave is transmitted through the screen, andthe acoustic wave is disturbed by user contact. A receiving transducerdetects the user contact instance and determines the contacted locationcoordinates.

The term “window” refers to a, typically rectangular, displayed image onat least part of a display that contains or provides content differentfrom the rest of the screen. The window may obscure the desktop.

The terms “determine”, “calculate” and “compute,” and variationsthereof, as used herein, are used interchangeably and include any typeof methodology, process, mathematical operation or technique.

It shall be understood that the term “means” as used herein shall begiven its broadest possible interpretation in accordance with 35 U.S.C.,Section 112, Paragraph 6. Accordingly, a claim 1ncorporating the term“means” shall cover all structures, materials, or acts set forth herein,and all of the equivalents thereof. Further, the structures, materialsor acts and the equivalents thereof shall include all those described inthe summary of the invention, brief description of the drawings,detailed description, abstract, and claims themselves.

The preceding is a simplified summary of the disclosure to provide anunderstanding of some aspects of the disclosure. This summary is neitheran extensive nor exhaustive overview of the disclosure and its variousaspects, embodiments, and/or configurations. It is intended neither toidentify key or critical elements of the disclosure nor to delineate thescope of the disclosure but to present selected concepts of thedisclosure in a simplified form as an introduction to the more detaileddescription presented below. As will be appreciated, other aspects,embodiments, and/or configurations of the disclosure are possibleutilizing, alone or in combination, one or more of the features setforth above or described in detail below.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A includes a first view of an embodiment of a multi-screen userdevice;

FIG. 1B includes a second view of an embodiment of a multi-screen userdevice;

FIG. 1C includes a third view of an embodiment of a multi-screen userdevice;

FIG. 1D includes a fourth view of an embodiment of a multi-screen userdevice;

FIG. 1E includes a fifth view of an embodiment of a multi-screen userdevice;

FIG. 1F includes a sixth view of an embodiment of a multi-screen userdevice;

FIG. 1G includes a seventh view of an embodiment of a multi-screen userdevice;

FIG. 1H includes a eighth view of an embodiment of a multi-screen userdevice;

FIG. 1I includes a ninth view of an embodiment of a multi-screen userdevice;

FIG. 1J includes a tenth view of an embodiment of a multi-screen userdevice;

FIG. 2 is a block diagram of an embodiment of the hardware of thedevice;

FIG. 3A is a block diagram of an embodiment of the state model for thedevice based on the device's orientation and/or configuration;

FIG. 3B is a table of an embodiment of the state model for the devicebased on the device's orientation and/or configuration;

FIG. 4A is a first representation of an embodiment of user gesturereceived at a device;

FIG. 4B is a second representation of an embodiment of user gesturereceived at a device;

FIG. 4C is a third representation of an embodiment of user gesturereceived at a device;

FIG. 4D is a fourth representation of an embodiment of user gesturereceived at a device;

FIG. 4E is a fifth representation of an embodiment of user gesturereceived at a device;

FIG. 4F is a sixth representation of an embodiment of user gesturereceived at a device;

FIG. 4G is a seventh representation of an embodiment of user gesturereceived at a device;

FIG. 4H is a eighth representation of an embodiment of user gesturereceived at a device;

FIG. 5A is a block diagram of an embodiment of the device softwareand/or firmware;

FIG. 5B is a second block diagram of an embodiment of the devicesoftware and/or firmware;

FIG. 6A is a first representation of an embodiment of a deviceconfiguration generated in response to the device state;

FIG. 6B is a second representation of an embodiment of a deviceconfiguration generated in response to the device state;

FIG. 7A depicts a first display state of a closed device with variousnon-displayed windows stacked on either side of the visible display inaccordance with embodiments of the present disclosure;

FIG. 7B depicts a second display state of a closed device with variousnon-displayed windows stacked on either side of the visible display inaccordance with embodiments of the present disclosure;

FIG. 7C depicts a third display state of a closed device with variousnon-displayed windows stacked on either side of the visible display inaccordance with embodiments of the present disclosure;

FIG. 8A depicts a first display state of an open device with variousnon-displayed windows stacked on either side of the visible display inaccordance with embodiments of the present disclosure;

FIG. 8B depicts a second display state of an open device with variousnon-displayed windows stacked on either side of the visible display inaccordance with embodiments of the present disclosure;

FIG. 8C depicts a third display state of an open device with variousnon-displayed windows stacked on either side of the visible display inaccordance with embodiments of the present disclosure;

FIG. 9 is a flow diagram depicting a desktop reveal expansion method inaccordance with embodiments of the present disclosure; and

FIG. 10 is a flow diagram depicting a desktop reveal expansion method inaccordance with embodiments of the present disclosure.

In the appended figures, similar components and/or features may have thesame reference label. Further, various components of the same type maybe distinguished by following the reference label by a letter thatdistinguishes among the similar components. If only the first referencelabel is used in the specification, the description is applicable to anyone of the similar components having the same first reference labelirrespective of the second reference label.

DETAILED DESCRIPTION

Presented herein are embodiments of a device. The device can be acommunications device, such as a cellular telephone, or other smartdevice. The device can include two screens that are oriented to provideseveral unique display configurations. Further, the device can receiveuser input in unique ways. The overall design and functionality of thedevice provides for an enhanced user experience making the device moreuseful and more efficient.

Mechanical Features:

FIGS. 1A-1J illustrate a device 100 in accordance with embodiments ofthe present disclosure. As described in greater detail below, device 100can be positioned in a number of different ways each of which providesdifferent functionality to a user. The device 100 is a multi-screendevice that includes a primary screen 104 and a secondary screen 108,both of which are touch sensitive. In embodiments, the entire frontsurface of screens 104 and 108 may be touch sensitive and capable ofreceiving input by a user touching the front surface of the screens 104and 108. Primary screen 104 includes touch sensitive display 110, which,in addition to being touch sensitive, also displays information to auser. Secondary screen 108 includes touch sensitive display 114, whichalso displays information to a user. In other embodiments, screens 104and 108 may include more than one display area.

Primary screen 104 also includes a configurable area 112 that has beenconfigured for specific inputs when the user touches portions of theconfigurable area 112. Secondary screen 108 also includes a configurablearea 116 that has been configured for specific inputs. Areas 112 a and116 a have been configured to receive a “back” input indicating that auser would like to view information previously displayed. Areas 112 band 116 b have been configured to receive a “menu” input indicating thatthe user would like to view options from a menu. Areas 112 c and 116 chave been configured to receive a “home” input indicating that the userwould like to view information associated with a “home” view. In otherembodiments, areas 112 a-c and 116 a-c may be configured, in addition tothe configurations described above, for other types of specific inputsincluding controlling features of device 100, some non-limiting examplesincluding adjusting overall system power, adjusting the volume,adjusting the brightness, adjusting the vibration, selecting ofdisplayed items (on either of screen 104 or 108), operating a camera,operating a microphone, and initiating/terminating of telephone calls.Also, in some embodiments, areas 112 a-C and 116 a-C may be configuredfor specific inputs depending upon the application running on device 100and/or information displayed on touch sensitive displays 110 and/or 114.

In addition to touch sensing, primary screen 104 and secondary screen108 may also include areas that receive input from a user withoutrequiring the user to touch the display area of the screen. For example,primary screen 104 includes gesture capture area 120, and secondaryscreen 108 includes gesture capture area 124. These areas are able toreceive input by recognizing gestures made by a user without the needfor the user to actually touch the surface of the display area. Incomparison to touch sensitive displays 110 and 114, the gesture captureareas 120 and 124 are commonly not capable of rendering a displayedimage.

The two screens 104 and 108 are connected together with a hinge 128,shown clearly in FIG. 1C (illustrating a back view of device 100). Hinge128, in the embodiment shown in FIGS. 1A-1J, is a center hinge thatconnects screens 104 and 108 so that when the hinge is closed, screens104 and 108 are juxtaposed (i.e., side-by-side) as shown in FIG. 1B(illustrating a front view of device 100). Hinge 128 can be opened toposition the two screens 104 and 108 in different relative positions toeach other. As described in greater detail below, the device 100 mayhave different functionalities depending on the relative positions ofscreens 104 and 108.

FIG. 1D illustrates the right side of device 100. As shown in FIG. 1D,secondary screen 108 also includes a card slot 132 and a port 136 on itsside. Card slot 132 in embodiments, accommodates different types ofcards including a subscriber identity module (SIM). Port 136 inembodiments is an input/output port (I/O port) that allows device 100 tobe connected to other peripheral devices, such as a display, keyboard,or printing device. As can be appreciated, these are merely someexamples and in other embodiments device 100 may include other slots andports such as slots and ports for accommodating additional memorydevices and/or for connecting other peripheral devices. Also shown inFIG. 1D is an audio jack 140 that accommodates a tip, ring, sleeve (TRS)connector for example to allow a user to utilize headphones or aheadset.

Device 100 also includes a number of buttons 158. For example, FIG. 1Eillustrates the left side of device 100. As shown in FIG. 1E, the sideof primary screen 104 includes three buttons 144, 148, and 152, whichcan be configured for specific inputs. For example, buttons 144, 148,and 152 may be configured to, in combination or alone, control a numberof aspects of device 100. Some non-limiting examples include overallsystem power, volume, brightness, vibration, selection of displayeditems (on either of screen 104 or 108), a camera, a microphone, andinitiation/termination of telephone calls. In some embodiments, insteadof separate buttons two buttons may be combined into a rocker button.This arrangement is useful in situations where the buttons areconfigured to control features such as volume or brightness. In additionto buttons 144, 148, and 152, device 100 also includes a button 156,shown in FIG. 1F, which illustrates the top of device 100. In oneembodiment, button 156 is configured as an on/off button used to controloverall system power to device 100. In other embodiments, button 156 isconfigured to, in addition to or in lieu of controlling system power,control other aspects of device 100. In some embodiments, one or more ofthe buttons 144, 148, 152, and 156 are capable of supporting differentuser commands. By way of example, a normal press has a duration commonlyof less than about 1 second and resembles a quick tap. A medium presshas a duration commonly of 1 second or more but less than about 12seconds. A long press has a duration commonly of about 12 seconds ormore. The function of the buttons is normally specific to theapplication that is currently in focus on the respective display 110 and114. In a telephone application for instance and depending on theparticular button, a normal, medium, or long press can mean end call,increase in call volume, decrease in call volume, and toggle microphonemute. In a camera or video application for instance and depending on theparticular button, a normal, medium, or long press can mean increasezoom, decrease zoom, and take photograph or record video.

There are also a number of hardware components within device 100. Asillustrated in FIG. 1C, device 100 includes a speaker 160 and amicrophone 164. Device 100 also includes a camera 168 (FIG. 1B).Additionally, device 100 includes two position sensors 172A and 172B,which are used to determine the relative positions of screens 104 and108. In one embodiment, position sensors 172A and 172B are Hall effectsensors. However, in other embodiments other sensors can be used inaddition to or in lieu of the Hall effect sensors. An accelerometer 176may also be included as part of device 100 to determine the orientationof the device 100 and/or the orientation of screens 104 and 108.Additional internal hardware components that may be included in device100 are described below with respect to FIG. 2.

The overall design of device 100 allows it to provide additionalfunctionality not available in other communication devices. Some of thefunctionality is based on the various positions and orientations thatdevice 100 can have. As shown in FIGS. 1B-1G, device 100 can be operatedin an “open” position where screens 104 and 108 are juxtaposed. Thisposition allows a large display area for displaying information to auser. When position sensors 172A and 172B determine that device 100 isin the open position, they can generate a signal that can be used totrigger different events such as displaying information on both screens104 and 108. Additional events may be triggered if accelerometer 176determines that device 100 is in a portrait position (FIG. 1B) asopposed to a landscape position (not shown).

In addition to the open position, device 100 may also have a “closed”position illustrated in FIG. 1H. Again, position sensors 172A and 172Bcan generate a signal indicating that device 100 is in the “closed”position. This can trigger an event that results in a change ofdisplayed information on screen 104 and/or 108. For example, device 100may be programmed to stop displaying information on one of the screens,e.g., screen 108, since a user can only view one screen at a time whendevice 100 is in the “closed” position. In other embodiments, the signalgenerated by position sensors 172A and 172B, indicating that the device100 is in the “closed” position, can trigger device 100 to answer anincoming telephone call. The “closed” position can also be a preferredposition for utilizing the device 100 as a mobile phone.

Device 100 can also be used in an “easel” position which is illustratedin FIG. 1I. In the “easel” position, screens 104 and 108 are angled withrespect to each other and facing outward with the edges of screens 104and 108 substantially horizontal. In this position, device 100 can beconfigured to display information on both screens 104 and 108 to allowtwo users to simultaneously interact with device 100. When device 100 isin the “easel” position, sensors 172A and 172B generate a signalindicating that the screens 104 and 108 are positioned at an angle toeach other, and the accelerometer 176 can generate a signal indicatingthat device 100 has been placed so that the edge of screens 104 and 108are substantially horizontal. The signals can then be used incombination to generate events that trigger changes in the display ofinformation on screens 104 and 108.

FIG. 1J illustrates device 100 in a “modified easel” position. In the“modified easel” position, one of screens 104 or 108 is used as a standand is faced down on the surface of an object such as a table. Thisposition provides a convenient way for information to be displayed to auser in landscape orientation. Similar to the easel position, whendevice 100 is in the “modified easel” position, position sensors 172Aand 172B generate a signal indicating that the screens 104 and 108 arepositioned at an angle to each other. The accelerometer 176 wouldgenerate a signal indicating that device 100 has been positioned so thatone of screens 104 and 108 is faced downwardly and is substantiallyhorizontal. The signals can then be used to generate events that triggerchanges in the display of information of screens 104 and 108. Forexample, information may not be displayed on the screen that is facedown since a user cannot see the screen.

Transitional states are also possible. When the position sensors 172Aand B and/or accelerometer indicate that the screens are being closed orfolded (from open), a closing transitional state is recognized.Conversely when the position sensors 172A and B indicate that thescreens are being opened or folded (from closed), an openingtransitional state is recognized. The closing and opening transitionalstates are typically time-based, or have a maximum time duration from asensed starting point. Normally, no user input is possible when one ofthe closing and opening states is in effect. In this manner, incidentaluser contact with a screen during the closing or opening function is notmisinterpreted as user input. In embodiments, another transitional stateis possible when the device 100 is closed. This additional transitionalstate allows the display to switch from one screen 104 to the secondscreen 108 when the device 100 is closed based on some user input, e.g.,a double tap on the screen 110,114.

As can be appreciated, the description of device 100 is made forillustrative purposes only, and the embodiments are not limited to thespecific mechanical features shown in FIGS. 1A-1J and described above.In other embodiments, device 100 may include additional features,including one or more additional buttons, slots, display areas, hinges,and/or locking mechanisms. Additionally, in embodiments, the featuresdescribed above may be located in different parts of device 100 andstill provide similar functionality. Therefore, FIGS. 1A-1J and thedescription provided above are nonlimiting.

Hardware Features:

FIG. 2 illustrates components of a device 100 in accordance withembodiments of the present disclosure. In general, the device 100includes a primary screen 104 and a secondary screen 108. While theprimary screen 104 and its components are normally enabled in both theopened and closed positions or states, the secondary screen 108 and itscomponents are normally enabled in the opened state but disabled in theclosed state. However, even when in the closed state a user orapplication triggered interrupt (such as in response to a phoneapplication or camera application operation) can flip the active screen,or disable the primary screen 104 and enable the secondary screen 108,by a suitable command. Each screen 104, 108 can be touch sensitive andcan include different operative areas. For example, a first operativearea, within each touch sensitive screen 104 and 108, may comprise atouch sensitive display 110, 114. In general, the touch sensitivedisplay 110, 114 may comprise a full color, touch sensitive display. Asecond area within each touch sensitive screen 104 and 108 may comprisea gesture capture region 120, 124. The gesture capture region 120, 124may comprise an area or region that is outside of the touch sensitivedisplay 110, 114 area, and that is capable of receiving input, forexample in the form of gestures provided by a user. However, the gesturecapture region 120, 124 does not include pixels that can perform adisplay function or capability.

A third region of the touch sensitive screens 104 and 108 may comprise aconfigurable area 112, 116. The configurable area 112, 116 is capable ofreceiving input and has display or limited display capabilities. Inembodiments, the configurable area 112, 116 may present different inputoptions to the user. For example, the configurable area 112, 116 maydisplay buttons or other relatable items. Moreover, the identity ofdisplayed buttons, or whether any buttons are displayed at all withinthe configurable area 112, 116 of a touch sensitive screen 104 or 108,may be determined from the context in which the device 100 is usedand/or operated. In an exemplary embodiment, the touch sensitive screens104 and 108 comprise liquid crystal display devices extending across atleast those regions of the touch sensitive screens 104 and 108 that arecapable of providing visual output to a user, and a capacitive inputmatrix over those regions of the touch sensitive screens 104 and 108that are capable of receiving input from the user.

One or more display controllers 216 a, 216 b may be provided forcontrolling the operation of the touch sensitive screens 104 and 108,including input (touch sensing) and output (display) functions. In theexemplary embodiment illustrated in FIG. 2, a separate touch screencontroller 216 a or 216 b is provided for each touch screen 104 and 108.In accordance with alternate embodiments, a common or shared touchscreen controller 216 may be used to control each of the included touchsensitive screens 104 and 108. In accordance with still otherembodiments, the functions of a touch screen controller 216 may beincorporated into other components, such as a processor 204.

The processor 204 may comprise a general purpose programmable processoror controller for executing application programming or instructions. Inaccordance with at least some embodiments, the processor 204 may includemultiple processor cores, and/or implement multiple virtual processors.In accordance with still other embodiments, the processor 204 mayinclude multiple physical processors. As a particular example, theprocessor 204 may comprise a specially configured application specificintegrated circuit (ASIC) or other integrated circuit, a digital signalprocessor, a controller, a hardwired electronic or logic circuit, aprogrammable logic device or gate array, a special purpose computer, orthe like. The processor 204 generally functions to run programming codeor instructions implementing various functions of the device 100.

A communication device 100 may also include memory 208 for use inconnection with the execution of application programming or instructionsby the processor 204, and for the temporary or long term storage ofprogram instructions and/or data. As examples, the memory 208 maycomprise RAM, DRAM, SDRAM, or other solid state memory. Alternatively orin addition, data storage 212 may be provided. Like the memory 208, thedata storage 212 may comprise a solid state memory device or devices.Alternatively or in addition, the data storage 212 may comprise a harddisk drive or other random access memory.

In support of communications functions or capabilities, the device 100can include a cellular telephony module 228. As examples, the cellulartelephony module 228 can comprise a GSM, CDMA, FDMA and/or analogcellular telephony transceiver capable of supporting voice, multimediaand/or data transfers over a cellular network. Alternatively or inaddition, the device 100 can include an additional or other wirelesscommunications module 232. As examples, the other wirelesscommunications module 232 can comprise a Wi-Fi, BLUETOOTH™, WiMax,infrared, or other wireless communications link. The cellular telephonymodule 228 and the other wireless communications module 232 can each beassociated with a shared or a dedicated antenna 224.

A port interface 252 may be included. The port interface 252 may includeproprietary or universal ports to support the interconnection of thedevice 100 to other devices or components, such as a dock, which may ormay not include additional or different capabilities from those integralto the device 100. In addition to supporting an exchange ofcommunication signals between the device 100 and another device orcomponent, the docking port 136 and/or port interface 252 can supportthe supply of power to or from the device 100. The port interface 252also comprises an intelligent element that comprises a docking modulefor controlling communications or other interactions between the device100 and a connected device or component.

An input/output module 248 and associated ports may be included tosupport communications over wired networks or links, for example withother communication devices, server devices, and/or peripheral devices.Examples of an input/output module 248 include an Ethernet port, aUniversal Serial Bus (USB) port, Institute of Electrical and ElectronicsEngineers (IEEE) 1394, or other interface.

An audio input/output interface/device(s) 244 can be included to provideanalog audio to an interconnected speaker or other device, and toreceive analog audio input from a connected microphone or other device.As an example, the audio input/output interface/device(s) 244 maycomprise an associated amplifier and analog to digital converter.Alternatively or in addition, the device 100 can include an integratedaudio input/output device 256 and/or an audio jack for interconnectingan external speaker or microphone. For example, an integrated speakerand an integrated microphone can be provided, to support near talk orspeaker phone operations.

Hardware buttons 158 can be included for example for use in connectionwith certain control operations. Examples include a master power switch,volume control, etc., as described in conjunction with FIGS. 1A through1J. One or more image capture interfaces/devices 240, such as a camera,can be included for capturing still and/or video images. Alternativelyor in addition, an image capture interface/device 240 can include ascanner or code reader. An image capture interface/device 240 caninclude or be associated with additional elements, such as a flash orother light source.

The device 100 can also include a global positioning system (GPS)receiver 236. In accordance with embodiments of the present invention,the GPS receiver 236 may further comprise a GPS module that is capableof providing absolute location information to other components of thedevice 100. An accelerometer(s) 176 may also be included. For example,in connection with the display of information to a user and/or otherfunctions, a signal from the accelerometer 176 can be used to determinean orientation and/or format in which to display that information to theuser.

Embodiments of the present invention can also include one or moreposition sensor(s) 172. The position sensor 172 can provide a signalindicating the position of the touch sensitive screens 104 and 108relative to one another. This information can be provided as an input,for example to a user interface application, to determine an operatingmode, characteristics of the touch sensitive displays 110, 114, and/orother device 100 operations. As examples, a screen position sensor 172can comprise a series of Hall effect sensors, a multiple positionswitch, an optical switch, a Wheatstone bridge, a potentiometer, orother arrangement capable of providing a signal indicating of multiplerelative positions the touch screens are in.

Communications between various components of the device 100 can becarried by one or more buses 222. In addition, power can be supplied tothe components of the device 100 from a power source and/or powercontrol module 260. The power control module 260 can, for example,include a battery, an AC to DC converter, power control logic, and/orports for interconnecting the device 100 to an external source of power.

Device State:

FIGS. 3A and 3B represent illustrative states of device 100. While anumber of illustrative states are shown, and transitions from a firststate to a second state, it is to be appreciated that the illustrativestate diagram may not encompass all possible states and/or all possibletransitions from a first state to a second state. As illustrated in FIG.3, the various arrows between the states (illustrated by the staterepresented in the circle) represent a physical change that occurs tothe device 100, that is detected by one or more of hardware andsoftware, the detection triggering one or more of a hardware and/orsoftware interrupt that is used to control and/or manage one or morefunctions of device 100.

As illustrated in FIG. 3A, there are twelve exemplary “physical” states:closed 304, transition 308 (or opening transitional state), easel 312,modified easel 316, open 320, inbound/outbound call or communication324, image/video capture 328, transition 332 (or closing transitionalstate), landscape 340, docked 336, docked 344 and landscape 348. Next toeach illustrative state is a representation of the physical state of thedevice 100 with the exception of states 324 and 328, where the state isgenerally symbolized by the international icon for a telephone and theicon for a camera, respectfully.

In state 304, the device is in a closed state with the device 100generally oriented in the portrait direction with the primary screen 104and the secondary screen 108 back-to-back in different planes (see FIG.1H). From the closed state, the device 100 can enter, for example,docked state 336, where the device 100 is coupled with a dockingstation, docking cable, or in general docked or associated with one ormore other devices or peripherals, or the landscape state 340, where thedevice 100 is generally oriented with the primary screen 104 facing theuser, and the primary screen 104 and the secondary screen 108 beingback-to-back.

In the closed state, the device can also move to a transitional statewhere the device remains closed by the display is moved from one screen104 to another screen 108 based on a user input, e.g., a double tap onthe screen 110, 114. Still another embodiment includes a bilateralstate. In the bilateral state, the device remains closed, but a singleapplication displays at least one window on both the first display 110and the second display 114. The windows shown on the first and seconddisplay 110, 114 may be the same or different based on the applicationand the state of that application. For example, while acquiring an imagewith a camera, the device may display the view finder on the firstdisplay 110 and displays a preview for the photo subjects (full screenand mirrored left-to-right) on the second display 114.

In state 308, a transition state from the closed state 304 to thesemi-open state or easel state 312, the device 100 is shown opening withthe primary screen 104 and the secondary screen 108 being rotated arounda point of axis coincidence with the hinge. Upon entering the easelstate 312, the primary screen 104 and the secondary screen 108 areseparated from one another such that, for example, the device 100 cansit in an easel-like configuration on a surface.

In state 316, known as the modified easel position, the device 100 hasthe primary screen 104 and the secondary screen 108 in a similarrelative relationship to one another as in the easel state 312, with thedifference being one of the primary screen 104 or the secondary screen108 are placed on a surface as shown.

State 320 is the open state where the primary screen 104 and thesecondary screen 108 are generally on the same plane. From the openstate, the device 100 can transition to the docked state 344 or the openlandscape state 348. In the open state 320, the primary screen 104 andthe secondary screen 108 are generally in the portrait-like orientationwhile in landscaped state 348 the primary screen 104 and the secondaryscreen 108 are generally in a landscape-like orientation.

State 324 is illustrative of a communication state, such as when aninbound or outbound call is being received or placed, respectively, bythe device 100. While not illustrated for clarity, it should beappreciated the device 100 can transition to the inbound/outbound callstate 324 from any state illustrated in FIG. 3. In a similar manner, theimage/video capture state 328 can be entered into from any other statein FIG. 3, with the image/video capture state 328 allowing the device100 to take one or more images via a camera and/or videos with a videocapture device 240.

Transition state 322 illustratively shows primary screen 104 and thesecondary screen 108 being closed upon one another for entry into, forexample, the closed state 304.

FIG. 3B illustrates, with reference to the key, the inputs that arereceived to detect a transition from a first state to a second state. InFIG. 3B, various combinations of states are shown with in general, aportion of the columns being directed toward a portrait state 352, alandscape state 356, and a portion of the rows being directed toportrait state 360 and landscape state 364.

In FIG. 3B, the Key indicates that “H” represents an input from one ormore Hall Effect sensors, “A” represents an input from one or moreaccelerometers, “T” represents an input from a timer, “P” represents acommunications trigger input and “I” represents an image and/or videocapture request input. Thus, in the center portion 376 of the chart, aninput, or combination of inputs, are shown that represent how the device100 detects a transition from a first physical state to a secondphysical state.

As discussed, in the center portion of the chart 376, the inputs thatare received enable the detection of a transition from, for example, aportrait open state to a landscape easel state—shown in bold—“HAT.” Forthis exemplary transition from the portrait open to the landscape easelstate, a Hall Effect sensor (“H”), an accelerometer (“A”) and a timer(“T”) input may be needed. The timer input can be derived from, forexample, a clock associated with the processor.

In addition to the portrait and landscape states, a docked state 368 isalso shown that is triggered based on the receipt of a docking signal372. As discussed above and in relation to FIG. 3, the docking signalcan be triggered by the association of the device 100 with one or moreother device 100 s, accessories, peripherals, smart docks, or the like.

User Interaction:

FIGS. 4A through 4H depict various graphical representations of gestureinputs that may be recognized by the screens 104, 108. The gestures maybe performed not only by a user's body part, such as a digit, but alsoby other devices, such as a stylus, that may be sensed by the contactsensing portion(s) of a screen 104, 108. In general, gestures areinterpreted differently, based on where the gestures are performed(either directly on the display 110, 114 or in the gesture captureregion 120, 124). For example, gestures in the display 110,114 may bedirected to a desktop or application, and gestures in the gesturecapture region 120, 124 may be interpreted as for the system.

With reference to FIGS. 4A-4H, a first type of gesture, a touch gesture420, is substantially stationary on the screen 104,108 for a selectedlength of time. A circle 428 represents a touch or other contact typereceived at particular location of a contact sensing portion of thescreen. The circle 428 may include a border 432, the thickness of whichindicates a length of time that the contact is held substantiallystationary at the contact location. For instance, a tap 420 (or shortpress) has a thinner border 432 a than the border 432 b for a long press424 (or for a normal press). The long press 424 may involve a contactthat remains substantially stationary on the screen for longer timeperiod than that of a tap 420. As will be appreciated, differentlydefined gestures may be registered depending upon the length of timethat the touch remains stationary prior to contact cessation or movementon the screen.

With reference to FIG. 4C, a drag gesture 400 on the screen 104,108 isan initial contact (represented by circle 428) with contact movement 436in a selected direction. The initial contact 428 may remain stationaryon the screen 104,108 for a certain amount of time represented by theborder 432. The drag gesture typically requires the user to contact anicon, window, or other displayed image at a first location followed bymovement of the contact in a drag direction to a new second locationdesired for the selected displayed image. The contact movement need notbe in a straight line but have any path of movement so long as thecontact is substantially continuous from the first to the secondlocations.

With reference to FIG. 4D, a flick gesture 404 on the screen 104,108 isan initial contact (represented by circle 428) with truncated contactmovement 436 (relative to a drag gesture) in a selected direction. Inembodiments, a flick has a higher exit velocity for the last movement inthe gesture compared to the drag gesture. The flick gesture can, forinstance, be a finger snap following initial contact. Compared to a draggesture, a flick gesture generally does not require continual contactwith the screen 104,108 from the first location of a displayed image toa predetermined second location. The contacted displayed image is movedby the flick gesture in the direction of the flick gesture to thepredetermined second location. Although both gestures commonly can movea displayed image from a first location to a second location, thetemporal duration and distance of travel of the contact on the screen isgenerally less for a flick than for a drag gesture.

With reference to FIG. 4E, a pinch gesture 408 on the screen 104,108 isdepicted. The pinch gesture 408 may be initiated by a first contact 428a to the screen 104,108 by, for example, a first digit and a secondcontact 428 b to the screen 104,108 by, for example, a second digit. Thefirst and second contacts 428 a,b may be detected by a common contactsensing portion of a common screen 104,108, by different contact sensingportions of a common screen 104 or 108, or by different contact sensingportions of different screens. The first contact 428 a is held for afirst amount of time, as represented by the border 432 a, and the secondcontact 428 b is held for a second amount of time, as represented by theborder 432 b. The first and second amounts of time are generallysubstantially the same, and the first and second contacts 428 a, bgenerally occur substantially simultaneously. The first and secondcontacts 428 a, b generally also include corresponding first and secondcontact movements 436 a, b, respectively. The first and second contactmovements 436 a, b are generally in opposing directions. Stated anotherway, the first contact movement 436 a is towards the second contact 436b, and the second contact movement 436 b is towards the first contact436 a. More simply stated, the pinch gesture 408 may be accomplished bya user's digits touching the screen 104,108 in a pinching motion.

With reference to FIG. 4F, a spread gesture 410 on the screen 104,108 isdepicted. The spread gesture 410 may be initiated by a first contact 428a to the screen 104,108 by, for example, a first digit and a secondcontact 428 b to the screen 104,108 by, for example, a second digit. Thefirst and second contacts 428 a,b may be detected by a common contactsensing portion of a common screen 104,108, by different contact sensingportions of a common screen 104,108, or by different contact sensingportions of different screens. The first contact 428 a is held for afirst amount of time, as represented by the border 432 a, and the secondcontact 428 b is held for a second amount of time, as represented by theborder 432 b. The first and second amounts of time are generallysubstantially the same, and the first and second contacts 428 a, bgenerally occur substantially simultaneously. The first and secondcontacts 428 a, b generally also include corresponding first and secondcontact movements 436 a, b, respectively. The first and second contactmovements 436 a, b are generally in a common direction. Stated anotherway, the first and second contact movements 436 a, b are away from thefirst and second contacts 428 a, b. More simply stated, the spreadgesture 410 may be accomplished by a user's digits touching the screen104,108 in a spreading motion.

The above gestures may be combined in any manner, such as those shown byFIGS. 4G and 4H, to produce a determined functional result. For example,in FIG. 4G a tap gesture 420 is combined with a drag or flick gesture412 in a direction away from the tap gesture 420. In FIG. 4H, a tapgesture 420 is combined with a drag or flick gesture 412 in a directiontowards the tap gesture 420.

The functional result of receiving a gesture can vary depending on anumber of factors, including a state of the device 100, display 110,114, or screen 104, 108, a context associated with the gesture, orsensed location of the gesture. The state of the device commonly refersto one or more of a configuration of the device 100, a displayorientation, and user and other inputs received by the device 100.Context commonly refers to one or more of the particular application(s)selected by the gesture and the portion(s) of the application currentlyexecuting, whether the application is a single- or multi-screenapplication, and whether the application is a multi-screen applicationdisplaying one or more windows in one or more screens or in one or morestacks. Sensed location of the gesture commonly refers to whether thesensed set(s) of gesture location coordinates are on a touch sensitivedisplay 110, 114 or a gesture capture region 120, 124, whether thesensed set(s) of gesture location coordinates are associated with acommon or different display or screen 104,108, and/or what portion ofthe gesture capture region contains the sensed set(s) of gesturelocation coordinates.

A tap, when received by an a touch sensitive display 110, 114, can beused, for instance, to select an icon to initiate or terminate executionof a corresponding application, to maximize or minimize a window, toreorder windows in a stack, and to provide user input such as bykeyboard display or other displayed image. A drag, when received by atouch sensitive display 110, 114, can be used, for instance, to relocatean icon or window to a desired location within a display, to reorder astack on a display, or to span both displays (such that the selectedwindow occupies a portion of each display simultaneously). A flick, whenreceived by a touch sensitive display 110, 114 or a gesture captureregion 120, 124, can be used to relocate a window from a first displayto a second display or to span both displays (such that the selectedwindow occupies a portion of each display simultaneously). Unlike thedrag gesture, however, the flick gesture is generally not used to movethe displayed image to a specific user-selected location but to adefault location that is not configurable by the user.

The pinch gesture, when received by a touch sensitive display 110, 114or a gesture capture region 120, 124, can be used to maximize orotherwise increase the displayed area or size of a window (typicallywhen received entirely by a common display), to switch windows displayedat the top of the stack on each display to the top of the stack of theother display (typically when received by different displays orscreens), or to display an application manager (a “pop-up window” thatdisplays the windows in the stack). The spread gesture, when received bya touch sensitive display 110, 114 or a gesture capture region 120, 124,can be used to minimize or otherwise decrease the displayed area or sizeof a window, to switch windows displayed at the top of the stack on eachdisplay to the top of the stack of the other display (typically whenreceived by different displays or screens), or to display an applicationmanager (typically when received by an off-screen gesture capture regionon the same or different screens).

The combined gestures of FIG. 4G, when received by a common displaycapture region in a common display or screen 104,108, can be used tohold a first window stack location in a first stack constant for adisplay receiving the gesture while reordering a second window stacklocation in a second window stack to include a window in the displayreceiving the gesture. The combined gestures of FIG. 4H, when receivedby different display capture regions in a common display or screen104,108 or in different displays or screens, can be used to hold a firstwindow stack location in a first window stack constant for a displayreceiving the tap part of the gesture while reordering a second windowstack location in a second window stack to include a window in thedisplay receiving the flick or drag gesture. Although specific gesturesand gesture capture regions in the preceding examples have beenassociated with corresponding sets of functional results, it is to beappreciated that these associations can be redefined in any manner toproduce differing associations between gestures and/or gesture captureregions and/or functional results.

Firmware and Software:

The memory 508 may store and the processor 504 may execute one or moresoftware components. These components can include at least one operatingsystem (OS) 516 a and/or 516 b, a framework 520, and/or one or moreapplications 564 a and/or 564 b from an application store 560. Theprocessor 504 may receive inputs from drivers 512, previously describedin conjunction with FIG. 2. The OS 516 can be any software, consistingof programs and data, that manages computer hardware resources andprovides common services for the execution of various applications 564.The OS 516 can be any operating system and, at least in someembodiments, dedicated to mobile devices, including, but not limited to,Linux, ANDROID™, iPhone OS (IOS™), WINDOWS PHONE 7™, etc. The OS 516 isoperable to provide functionality to the phone by executing one or moreoperations, as described herein.

The applications 564 can be any higher level software that executesparticular functionality for the user. Applications 564 can includeprograms such as email clients, web browsers, texting applications,games, media players, office suites, etc. The applications 564 can bestored in an application store 560, which may represent any memory ordata storage, and the management software associated therewith, forstoring the applications 564. Once executed, the applications 564 may berun in a different area of memory 508.

The framework 520 may be any software or data that allows the multipletasks running on the device to interact. In embodiments, at leastportions of the framework 520 and the discrete components describedhereinafter may be considered part of the OS 516 or an application 564.However, these portions will be described as part of the framework 520,but those components are not so limited. The framework 520 can include,but is not limited to, a Multi-Display Management (MDM) module 524, aSurface Cache module 528, a Window Management module 532, an InputManagement module 536, a Task Management module 540, a DisplayController, one or more frame buffers 548, a task stack 552, one or morewindow stacks 550 (which is a logical arrangement of windows and/ordesktops in a display area), and/or an event buffer 556.

The MDM module 524 includes one or more modules that are operable tomanage the display of applications or other data on the screens of thedevice. An embodiment of the MDM module 524 is described in conjunctionwith FIG. 5B. In embodiments, the MDM module 524 receives inputs fromthe OS 516, the drivers 512 and the applications 564. The inputs assistthe MDM module 524 in determining how to configure and allocate thedisplays according to the application's preferences and requirements,and the user's actions. Once a determination for display configurationsis determined, the MDM module 524 can bind the applications 564 to adisplay configuration. The configuration may then be provided to one ormore other components to generate the display.

The Surface Cache module 528 includes any memory or storage and thesoftware associated therewith to store or cache one or more images fromthe display screens. Each display screen may have associated with thescreen a series of active and non-active windows (or other displayobjects (such as a desktop display)). The active window (or otherdisplay object) is currently being displayed. The non-active windows (orother display objects) were opened and/or at some time displayed but arenow “behind” the active window (or other display object). To enhance theuser experience, before being covered by another active window (or otherdisplay object), a “screen shot” of a last generated image of the window(or other display object) can be stored. The Surface Cache module 528may be operable to store the last active image of a window (or otherdisplay object) not currently displayed. Thus, the Surface Cache module528 stores the images of non-active windows (or other display objects)in a data store (not shown).

In embodiments, the Window Management module 532 is operable to managethe windows (or other display objects) that are active or not active oneach of the screens. The Window Management module 532, based oninformation from the MDM module 524, the OS 516, or other components,determines when a window (or other display object) is active or notactive. The Window Management module 532 may then put a non-visiblewindow (or other display object) in a “not active state” and, inconjunction with the Task Management module Task Management 540 suspendthe application's operation. Further, the Window Management module 532may assign a screen identifier to the window (or other display object)or manage one or more other items of data associated with the window (orother display object). The Window Management module 532 may also providethe stored information to the application 564, the Task Managementmodule 540, or other components interacting with or associated with thewindow (or other display object).

The Input Management module 536 is operable to manage events that occurwith the device. An event is any input into the window environment, forexample, a user interface interactions with a user. The Input Managementmodule 536 receives the events and logically stores the events in anevent buffer 556. Events can include such user interface interactions asa “down event,” which occurs when a screen 104, 108 receives a touchsignal from a user, a “move event,” which occurs when the screen 104,108 determines that a user's finger is moving across a screen(s), an “upevent, which occurs when the screen 104, 108 determines that the userhas stopped touching the screen 104, 108, etc. These events arereceived, stored, and forwarded to other modules by the Input Managementmodule 536.

A task can be an application component that provides a screen with whichusers can interact in order to do something, such as dial the phone,take a photo, send an email, or view a map. Each task may be given awindow in which to draw a user interface. The window typically fills thedisplay 110,114, but may be smaller than the display 110,114 and floaton top of other windows. An application usually consists of multipleactivities that are loosely bound to each other. Typically, one task inan application is specified as the “main” task, which is presented tothe user when launching the application for the first time. Each taskcan then start another task to perform different actions.

The Task Management module 540 is operable to manage the operation ofthe one or more applications 564 that may be executed by the device.Thus, the Task Management module 540 can receive signals to execute anapplication stored in the application store 560. The Task Managementmodule 540 may then instantiate one or more tasks or components of theapplication 564 to begin operation of the application 564. Further, theTask Management module 540 may suspend the application 564 based on userinterface changes. Suspending the application 564 may maintainapplication data in memory but may limit or stop access to processorcycles for the application 564. Once the application becomes activeagain, the Task Management module 540 can again provide access to theprocessor.

The Display Controller 544 is operable to render and output thedisplay(s) for the multi-screen device. In embodiments, the DisplayController 544 creates and/or manages one or more frame buffers 548. Aframe buffer 548 can be a display output that drives a display from aportion of memory containing a complete frame of display data. Inembodiments, the Display Controller 544 manages one or more framebuffers. One frame buffer may be a composite frame buffer that canrepresent the entire display space of both screens. This composite framebuffer can appear as a single frame to the OS 516. The DisplayController 544 can sub-divide this composite frame buffer as requiredfor use by each of the displays 110, 114. Thus, by using the DisplayController 544, the device 100 can have multiple screen displays withoutchanging the underlying software of the OS 516.

The Application Manager 562 can be a service that provides thepresentation layer for the window environment. Thus, the ApplicationManager 562 provides the graphical model for rendering by the WindowManagement Module 556. Likewise, the Desktop 566 provides thepresentation layer for the Application Store 560. Thus, the desktopprovides a graphical model of a surface having selectable applicationicons for the Applications 564 in the Application Store 560 that can beprovided to the Window Management Module 556 for rendering.

An embodiment of the MDM module 524 is shown in FIG. 5B. The MDM module524 is operable to determine the state of the environment for thedevice, including, but not limited to, the orientation of the device,what applications 564 are executing, how the applications 564 are to bedisplayed, what actions the user is conducting, the tasks beingdisplayed, etc. To configure the display, the MDM module 524 interpretsthese environmental factors and determines a display configuration, asdescribed in conjunction with FIGS. 6A-6J. Then, the MDM module 524 canbind the applications 564 or other device components to the displays.The configuration may then be sent to the Display Controller 544 and/orthe OS 516 to generate the display. The MDM module 524 can include oneor more of, but is not limited to, a Display Configuration Module 568, aPreferences Module 572, a Device State Module 574, a Gesture Module 576,a Requirements Module 580, an Event Module 584, and/or a Binding Module588.

The Display Configuration Module 568 determines the layout for thedisplay. In embodiments, the Display Configuration Module 568 candetermine the environmental factors. The environmental factors may bereceived from one or more other MDM module 524 modules or from othersources. The Display Configuration Module 568 can then determine fromthe list of factors the best configuration for the display. Someembodiments of the possible configurations and the factors associatedtherewith are described in conjunction with FIGS. 6A-6F.

The Preferences Module 572 is operable to determine display preferencesfor an application 564 or other component. For example, an applicationcan have a preference for Single or Dual displays. The PreferencesModule 572 can determine or receive the application preferences andstore the preferences. As the configuration of the device changes, thepreferences may be reviewed to determine if a better displayconfiguration can be achieved for the application 564.

The Device State Module 574 is operable to determine or receive thestate of the device. The state of the device can be as described inconjunction with FIGS. 3A and 3B. The state of the device can be used bythe Display Configuration Module 568 to determine the configuration forthe display. As such, the Device State Module 574 may receive inputs andinterpret the state of the device. The state information is thenprovided to the Display Configuration Module 568.

The Gesture Module 576 is operable to determine if the user isconducting any actions on the user interface. Thus, the Gesture Module576 can receive task information either from the task stack 552 or theInput Management module 536. These gestures may be as defined inconjunction with FIGS. 4A through 4H. For example, moving a windowcauses the display to render a series of display frames that illustratethe window moving. The gesture associated with such user interfaceinteraction can be received and interpreted by the Gesture Module 576.The information about the user gesture is then sent to the TaskManagement Module 540 to modify the display binding of the task.

The Requirements Module 580, similar to the Preferences Module 572, isoperable to determine display requirements for an application 564 orother component. An application can have a set display requirement thatmust be observed. Some applications require a particular displayorientation. For example, the application “Angry Birds” can only bedisplayed in landscape orientation. This type of display requirement canbe determined or received, by the Requirements Module 580. As theorientation of the device changes, the Requirements Module 580 canreassert the display requirements for the application 564. The DisplayConfiguration Module 568 can generate a display configuration that is inaccordance with the application display requirements, as provided by theRequirements Module 580.

The Event Module 584, similar to the Gesture Module 576, is operable todetermine one or more events occurring with an application or othercomponent that can affect the user interface. Thus, the Gesture Module576 can receive event information either from the event buffer 556 orthe Task Management module 540. These events can change how the tasksare bound to the displays. For example, an email application receivingan email can cause the display to render the new message in a secondaryscreen. The events associated with such application execution can bereceived and interpreted by the Event Module 584. The information aboutthe events then may be sent to the Display Configuration Module 568 tomodify the configuration of the display.

The Binding Module 588 is operable to bind the applications 564 or theother components to the configuration determined by the DisplayConfiguration Module 568. A binding associates, in memory, the displayconfiguration for each application with the display and mode of theapplication. Thus, the Binding Module 588 can associate an applicationwith a display configuration for the application (e.g. landscape,portrait, multi-screen, etc.). Then, the Binding Module 588 may assign adisplay identifier to the display. The display identifier associated theapplication with a particular screen of the device. This binding is thenstored and provided to the Display Controller 544, the OS 516, or othercomponents to properly render the display. The binding is dynamic andcan change or be updated based on configuration changes associated withevents, gestures, state changes, application preferences orrequirements, etc.

User Interface Configurations:

With reference now to FIGS. 6A-J, various types of output configurationsmade possible by the device 100 will be described hereinafter.

FIGS. 6A and 6B depict two different output configurations of the device100 being in a first state. Specifically, FIG. 6A depicts the device 100being in a closed portrait state 304 where the data is displayed on theprimary screen 104. In this example, the device 100 displays data viathe touch sensitive display 110 in a first portrait configuration 604.As can be appreciated, the first portrait configuration 604 may onlydisplay a desktop or operating system home screen. Alternatively, one ormore windows may be presented in a portrait orientation while the device100 is displaying data in the first portrait configuration 604.

FIG. 6B depicts the device 100 still being in the closed portrait state304, but instead data is displayed on the secondary screen 108. In thisexample, the device 100 displays data via the touch sensitive display114 in a second portrait configuration 608.

It may be possible to display similar or different data in either thefirst or second portrait configuration 604, 608. It may also be possibleto transition between the first portrait configuration 604 and secondportrait configuration 608 by providing the device 100 a user gesture(e.g., a double tap gesture), a menu selection, or other means. Othersuitable gestures may also be employed to transition betweenconfigurations. Furthermore, it may also be possible to transition thedevice 100 from the first or second portrait configuration 604, 608 toany other configuration described herein depending upon which state thedevice 100 is moved.

An alternative output configuration may be accommodated by the device100 being in a second state. Specifically, FIG. 6C depicts a thirdportrait configuration where data is displayed simultaneously on boththe primary screen 104 and the secondary screen 108. The third portraitconfiguration may be referred to as a Dual-Portrait (PD) outputconfiguration. In the PD output configuration, the touch sensitivedisplay 110 of the primary screen 104 depicts data in the first portraitconfiguration 604 while the touch sensitive display 114 of the secondaryscreen 108 depicts data in the second portrait configuration 608. Thesimultaneous presentation of the first portrait configuration 604 andthe second portrait configuration 608 may occur when the device 100 isin an open portrait state 320. In this configuration, the device 100 maydisplay one application window in one display 110 or 114, twoapplication windows (one in each display 110 and 114), one applicationwindow and one desktop, or one desktop. Other configurations may bepossible. It should be appreciated that it may also be possible totransition the device 100 from the simultaneous display ofconfigurations 604, 608 to any other configuration described hereindepending upon which state the device 100 is moved. Furthermore, whilein this state, an application's display preference may place the deviceinto bilateral mode, in which both displays are active to displaydifferent windows in the same application. For example, a Cameraapplication may display a viewfinder and controls on one side, while theother side displays a mirrored preview that can be seen by the photosubjects. Games involving simultaneous play by two players may also takeadvantage of bilateral mode.

FIGS. 6D and 6E depicts two further output configurations of the device100 being in a third state. Specifically, FIG. 6D depicts the device 100being in a closed landscape state 340 where the data is displayed on theprimary screen 104. In this example, the device 100 displays data viathe touch sensitive display 110 in a first landscape configuration 612.Much like the other configurations described herein, the first landscapeconfiguration 612 may display a desktop, a home screen, one or morewindows displaying application data, or the like.

FIG. 6E depicts the device 100 still being in the closed landscape state340, but instead data is displayed on the secondary screen 108. In thisexample, the device 100 displays data via the touch sensitive display114 in a second landscape configuration 616. It may be possible todisplay similar or different data in either the first or second portraitconfiguration 612, 616. It may also be possible to transition betweenthe first landscape configuration 612 and second landscape configuration616 by providing the device 100 with one or both of a twist and tapgesture or a flip and slide gesture. Other suitable gestures may also beemployed to transition between configurations. Furthermore, it may alsobe possible to transition the device 100 from the first or secondlandscape configuration 612, 616 to any other configuration describedherein depending upon which state the device 100 is moved.

FIG. 6F depicts a third landscape configuration where data is displayedsimultaneously on both the primary screen 104 and the secondary screen108. The third landscape configuration may be referred to as aDual-Landscape (LD) output configuration. In the LD outputconfiguration, the touch sensitive display 110 of the primary screen 104depicts data in the first landscape configuration 612 while the touchsensitive display 114 of the secondary screen 108 depicts data in thesecond landscape configuration 616. The simultaneous presentation of thefirst landscape configuration 612 and the second landscape configuration616 may occur when the device 100 is in an open landscape state 340. Itshould be appreciated that it may also be possible to transition thedevice 100 from the simultaneous display of configurations 612, 616 toany other configuration described herein depending upon which state thedevice 100 is moved.

FIGS. 6G and 6H depict two views of a device 100 being in yet anotherstate. Specifically, the device 100 is depicted as being in an easelstate 312. FIG. 6G shows that a first easel output configuration 618 maybe displayed on the touch sensitive display 110. FIG. 6H shows that asecond easel output configuration 620 may be displayed on the touchsensitive display 114. The device 100 may be configured to depict eitherthe first easel output configuration 618 or the second easel outputconfiguration 620 individually. Alternatively, both the easel outputconfigurations 618, 620 may be presented simultaneously. In someembodiments, the easel output configurations 618, 620 may be similar oridentical to the landscape output configurations 612, 616. The device100 may also be configured to display one or both of the easel outputconfigurations 618, 620 while in a modified easel state 316. It shouldbe appreciated that simultaneous utilization of the easel outputconfigurations 618, 620 may facilitate two-person games (e.g.,Battleship®, chess, checkers, etc.), multi-user conferences where two ormore users share the same device 100, and other applications. As can beappreciated, it may also be possible to transition the device 100 fromthe display of one or both configurations 618, 620 to any otherconfiguration described herein depending upon which state the device 100is moved.

FIG. 6I depicts yet another output configuration that may beaccommodated while the device 100 is in an open portrait state 320.Specifically, the device 100 may be configured to present a singlecontinuous image across both touch sensitive displays 110, 114 in aportrait configuration referred to herein as a Portrait-Max (PMax)configuration 624. In this configuration, data (e.g., a single image,application, window, icon, video, etc.) may be split and displayedpartially on one of the touch sensitive displays while the other portionof the data is displayed on the other touch sensitive display. The Pmaxconfiguration 624 may facilitate a larger display and/or betterresolution for displaying a particular image on the device 100. Similarto other output configurations, it may be possible to transition thedevice 100 from the Pmax configuration 624 to any other outputconfiguration described herein depending upon which state the device 100is moved.

FIG. 6J depicts still another output configuration that may beaccommodated while the device 100 is in an open landscape state 348.Specifically, the device 100 may be configured to present a singlecontinuous image across both touch sensitive displays 110, 114 in alandscape configuration referred to herein as a Landscape-Max (LMax)configuration 628. In this configuration, data (e.g., a single image,application, window, icon, video, etc.) may be split and displayedpartially on one of the touch sensitive displays while the other portionof the data is displayed on the other touch sensitive display. The Lmaxconfiguration 628 may facilitate a larger display and/or betterresolution for displaying a particular image on the device 100. Similarto other output configurations, it may be possible to transition thedevice 100 from the Lmax configuration 628 to any other outputconfiguration described herein depending upon which state the device 100is moved.

Display Controls:

FIGS. 7A-C depict graphical representations of embodiments of a device100 in a closed portrait state 304 where the primary screen 104 in afirst portrait configuration 604 is shown surrounded by a solid line,while the secondary display 108 is in a second portrait configuration608 but is not visible (also known as non-visible), and is accordinglyrepresented by a surrounding dashed line. Other pages 704, 708, 712, 716that are not visible on the primary screen 104 or the secondary screen108 are also graphically represented as surrounded by dashed lines.

In one embodiment of the device 100, the MDM class 524 arrangesapplications, desktops, and/or other displayable information through theWindow Management class 532 onto separate pages 704, 708, 712, 716 andorganizes those pages 704, 708, 712, 716 into virtual “stacks.” Thesestacks of pages can be created, deleted, shuffled, and/or moved by auser or an output from the MDM class 524, similar to a user manipulatingthe virtual playing cards of a deck stack. In FIGS. 7A-C, the stacks ofindividual pages 704, 708, 712, 716 are shown spread outwardly in alinear format on both the left side of the primary screen 104 as wellthe right side of the non-visible secondary screen 108 to bettervisualize the organization of the virtual stacks. The position of a pagefrom the primary screen 104 or secondary screen 108 is the position ofthe page in each respective stack stored on the device 100. Therefore,if a page is graphically represented immediately adjacent to the primaryscreen 104, or immediately adjacent to the secondary screen 108, it isthe first page in the stack that may be moved onto that adjacent screenwith a user input gesture. Although only several pages of a stack areshown in FIGS. 7A-C, the number of pages available to be organized inthe stack can vary and, in some embodiments, may equal the number ofapplications, desktops, and/or other displayable information created onthe device 100. Moreover, the stack adjacent to the primary screen 104and the stack adjacent to the secondary screen 108 may act as a unifiedstack (where a move or manipulation of a page from one stack moves ormanipulates the pages in both stacks), or as independent stacks (eachscreen having its own independently navigable stack of pages).

In an embodiment of the present disclosure, it is anticipated that theconcept of stacks disclosed herein may also be applied to desktopsavailable on the device 100. In other words, a desktop virtual stack maybe used for the desktops which can be displayed by the device 100 and anapplication virtual stack may be used for the applications which can bedisplayed by the device 100. Specifically, when a desktop is revealed itmay be divided into multiple pages for display on multiple screens ofthe device 100. These pages may be manipulated in their own desktopvirtual stack, or stacks, separate from the application virtual stacksand/or other virtual stacks. This separation of stacks allows forgreater user flexibility in navigating through different applications ordesktops by creating an intuitive interface dependent on the datadisplayed to the screens 104, 108. However, it is also anticipated thatthese stacks could be combined to form a single virtual stack.

FIG. 7A shows a graphical representation of the device 100 running fourseparate applications. The device 100 is shown in a closed portraitstate 304. In the present embodiment, only the primary screen 104 isvisible showing a running application. Three pages are not visible butare all running different applications. Specifically, the non-visiblesecondary screen 108, a first stack first page 704, and a second stackfirst page 712, are running different applications (e.g., secondapplication, third application, and fourth application).

FIG. 7B shows an embodiment of the present device 100 where the desktopreveal expansion has been initiated. The device 100 is shown in a closedportrait state 304. The desktop reveal expansion may be initiated by,(1) a user input gesture, (2) combination of user input gestures, (3) amemory output, (4) a response to a predetermined condition (e.g.,application control, power levels, communications interrupt, operatingsystem state, device screen state open/closed, timers, and single ormultiple sensor outputs) or (5) any combination thereof, that the MDMclass 524 registers and interprets as an initiation command. Asillustrated in FIG. 7B, once the desktop reveal expansion is initiated,the MDM class 524 and the Window Management class 532 move theapplication running on the primary screen 104 to the first stack firstpage 704 (shown on the left-hand side of the primary screen 104) and thesecond application running on the secondary screen 108 to the secondstack first page 712 (shown on the right-hand side of the secondaryscreen 108). At this time, the applications that were running on thefirst stack first page 704 and the second stack first page 712, aremoved to a first stack second page 708 and a second stack second page716, respectively. The first page of the desktop is now visible on theprimary screen 104, while the non-visible secondary screen 108 isrunning the second page of the desktop. When the device 100 is closed,the MDM class 524 interprets the display state of the secondary screen108, and if the secondary screen 108 is in an “off” state (where thescreen is not actively displaying information), the MDM class 524 willcreate a virtual representation of the display in its register throughthe Window Management class 532.

In embodiments where multiple pages are open in a stack, an initiationof the desktop reveal expansion will move each page one position furtheraway from the primary and secondary screens 104, 108. It is anticipatedthat at least one embodiment of the present disclosure provides thatpages in the first stack, as well as pages in the second stack, may movetogether as if the pages were virtually connected. Therefore, a singleposition move of one page in a stack correspondingly moves all of thepages in that stack by one position. In addition, it is anticipated thatthis concept can also be applied to the pages of a virtual desktopstack.

FIG. 7C shows an embodiment of the present device 100, in a closedportrait state 304, where the desktop reveal expansion has beeninitiated and the desktop has been indexed to display the second desktoppage on the primary screen 104. As the second desktop is indexed ontothe primary screen 104, a third desktop is indexed onto the non-visiblesecondary screen 108 by the MDM class 524 and the Window Managementclass 532. While the desktop reveal expansion is initiated, the user cannavigate between desktop pages by moving them into view on the primaryscreen 104 by providing a user input gesture 720. This input may bedetected by one or more of the hardware components of the device 100 asdiscussed herein.

FIG. 8A shows a graphical representation of the device 100 running fourseparate single-screen applications in an open portrait state 320. Inthe present embodiment, both the primary screen 104 and secondary screen108 are visible showing running applications. Two pages are not visiblebut are running different applications. Specifically, the first stackfirst page 704, and the second stack first page 712, are runningdifferent applications (e.g., second application and third application).

FIG. 8B shows an embodiment of the present device 100 where the desktopreveal expansion has been initiated. The device 100 is shown in an openportrait state 320. The desktop reveal expansion may be initiated by,(1) a user input gesture, (2) combination of user input gestures, (3) amemory output, (4) a response to a predetermined condition (e.g.,application control, power levels, communications interrupt, operatingsystem state, device screen state open/closed, timers, and single ormultiple sensor outputs) or (5) any combination thereof, that the MDMclass 524 registers and interprets as an initiation command. Asillustrated in FIG. 8B, once the desktop reveal expansion is initiated,the MDM class 524 and the Window Management class 532 move theapplication running on the primary screen 104 to the first stack firstpage 704 (shown on the left-hand side of the primary screen) and thesecond application running on the secondary screen 108 to the secondstack first page 712 (shown on the right-hand side of the secondaryscreen). At this time, the applications that were running on the firststack first page 704 and the second stack first page 712, are moved to afirst stack second page 708 and a second stack second page 716,respectively. The first page of the desktop is now visible on theprimary screen 104, while the second page of the desktop is visible onthe secondary screen 108. It is anticipated that at least one embodimentof the present disclosure provides that pages in the left stack, as wellas pages in the right stack, may move together as if the pages in astack are virtually connected. Therefore, a single position move of apage in one stack correspondingly moves all of the pages in that stackby one position.

FIG. 8C shows an embodiment of the present device 100, in an openportrait state 320, where the desktop reveal expansion has beeninitiated and the desktop has been indexed to display the second desktoppage on the primary screen 104 and the third desktop on the secondaryscreen 108. While the desktop reveal expansion is initiated, the usercan navigate between desktop pages by moving them into view on theprimary screen 104 and/or secondary screen 108 by providing a user inputgesture 720. This input may be detected by one or more of the hardwarecomponents of the device 100 as discussed herein. In one embodiment ofthe present invention, the desktops may move together when beingnavigated by the user. This linked movement of desktops is similar toembodiments in which the pages in a stack can move together as disclosedherein.

Referring now to FIG. 9, a desktop reveal expansion method 900 will bedescribed in accordance with at least some embodiments of the presentdisclosure. The method is initiated at step 904. Specifically, a device100 may be initially running applications on one or more screens 104,108 in an open or closed portrait state 304, 320. The method continueswhen the device 100 detects a desktop reveal input (step 908) from theuser. In some embodiments, this input is registered at the MDM class524.

Next, the MDM class 524 must detect any applications open or running onthe primary screen 104, the secondary screen 108, the first stack, andthe second stack. Once detected, the MDM class 524 and Window Managementclass 532 moves all of the application pages one position further awayfrom their initial positions adjacent to the primary and secondaryscreens 104, 108 (step 916). Specifically, the first stack is moved tothe left of the primary screen 104 and the second stack is moved to theright of the secondary screen 108.

After or while the Window Management class 532 moves the applicationpages, the method continues with the MDM class 524 and Window Managementclass 532 displaying the first desktop on the primary screen 104 and thesecond desktop on the secondary screen 108 (step 920). If the device 100is closed, and at least one display is turned off, then the desktop willonly be displayed on the screen that is on.

Once the desktop is revealed, the MDM class 524 detects a user gestureinput (step 924). The nature of the user gesture input will determinewhether to display the next desktop in order (step 928), indicate theend of the available desktop range (step 932), or deactivate the desktopreveal and return the previously open applications to their originalpages (step 936) which were detected earlier in the process (at step912).

Referring to FIG. 10, a desktop reveal expansion method 1000 will bedescribed in accordance with at least some embodiments of the presentdisclosure. The method is initiated at step 1004. This method isinitiated if the device 100 is already running with the desktoprevealed. The method continues when the device 100 detects a usergesture input (step 1008). The MDM class 524 determines and thenregisters the input provided by a user, which allows the user tonavigate through multiple desktop pages or cancel the desktop revealexpansion (step 936).

After or while the MDM class 524 determines the desktop number displayedon the primary screen 104, the MDM class 524 must determine if thedisplayed desktop is the first, last, or one of the desktops between thefirst and last desktops (steps 1016, 1028, 1040). If the first desktopis displayed 1016, the MDM class 524 interprets the previouslyregistered gesture input and either displays the next desktop in order1020, or indicates to the user that the desktop is at its end of range1024. If the last desktop is displayed 1028, the MDM class 524interprets the previously registered gesture input and either indicatesto the user that the desktop is at its end of range 1032, or it displaysthe previous desktop in order 1036. If the desktop displayed on theprimary screen 104 is neither the first or last desktop, then the MDMclass 524 interprets the previously registered gesture input to eitherdisplay the next desktop in order 1044 or display the previous desktopin order 1048.

After the MDM class 524 interprets the previously registered gestureinput and displays the appropriate response, the MDM class 524 returnsto determine user gesture input (step 1008) until the method is ended(step 936).

The exemplary systems and methods of this disclosure have been describedin relation to display controls for a multi-screen device. However, toavoid unnecessarily obscuring the present disclosure, the precedingdescription omits a number of known structures and devices. Thisomission is not to be construed as a limitation of the scopes of theclaims. Specific details are set forth to provide an understanding ofthe present disclosure. It should however be appreciated that thepresent disclosure may be practiced in a variety of ways beyond thespecific detail set forth herein.

Furthermore, while the exemplary aspects, embodiments, and/orconfigurations illustrated herein show the various components of thesystem collocated, certain components of the system can be locatedremotely, at distant portions of a distributed network, such as a LANand/or the Internet, or within a dedicated system. Thus, it should beappreciated, that the components of the system can be combined in to oneor more devices, such as a Personal Computer (PC), laptop, netbook,Personal Digital Assistant (PDA), tablet, etc., or collocated on aparticular node of a distributed network, such as an analog and/ordigital telecommunications network, a packet-switch network, or acircuit-switched network. It will be appreciated from the precedingdescription, and for reasons of computational efficiency, that thecomponents of the system can be arranged at any location within adistributed network of components without affecting the operation of thesystem. For example, the various components can be located in a switchsuch as a PBX and media server, gateway, in one or more communicationsdevices, at one or more users' premises, or some combination thereof.Similarly, one or more functional portions of the system could bedistributed between a telecommunications device(s) and an associatedcomputing device.

Furthermore, it should be appreciated that the various links connectingthe elements can be wired or wireless links, or any combination thereof,or any other known or later developed element(s) that is capable ofsupplying and/or communicating data to and from the connected elements.These wired or wireless links can also be secure links and may becapable of communicating encrypted information. Transmission media usedas links, for example, can be any suitable carrier for electricalsignals, including coaxial cables, copper wire and fiber optics, and maytake the form of acoustic or light waves, such as those generated duringradio-wave and infra-red data communications.

Also, while the flowcharts have been discussed and illustrated inrelation to a particular sequence of events, it should be appreciatedthat changes, additions, and omissions to this sequence can occurwithout materially affecting the operation of the disclosed embodiments,configuration, and aspects.

A number of variations and modifications of the disclosure can be used.It would be possible to provide for some features of the disclosurewithout providing others.

In some embodiments, the systems and methods of this disclosure can beimplemented in conjunction with a special purpose computer, a programmedmicroprocessor or microcontroller and peripheral integrated circuitelement(s), an ASIC or other integrated circuit, a digital signalprocessor, a hard-wired electronic or logic circuit such as discreteelement circuit, a programmable logic device or gate array such as PLD,PLA, FPGA, PAL, special purpose computer, any comparable means, or thelike. In general, any device(s) or means capable of implementing themethodology illustrated herein can be used to implement the variousaspects of this disclosure. Exemplary hardware that can be used for thedisclosed embodiments, configurations and aspects includes computers,handheld devices, telephones (e.g., cellular, Internet enabled, digital,analog, hybrids, and others), and other hardware known in the art. Someof these devices include processors (e.g., a single or multiplemicroprocessors), memory, nonvolatile storage, input devices, and outputdevices. Furthermore, alternative software implementations including,but not limited to, distributed processing or component/objectdistributed processing, parallel processing, or virtual machineprocessing can also be constructed to implement the methods describedherein.

In yet another embodiment, the disclosed methods may be readilyimplemented in conjunction with software using object or object-orientedsoftware development environments that provide portable source code thatcan be used on a variety of computer or workstation platforms.Alternatively, the disclosed system may be implemented partially orfully in hardware using standard logic circuits or VLSI design. Whethersoftware or hardware is used to implement the systems in accordance withthis disclosure is dependent on the speed and/or efficiency requirementsof the system, the particular function, and the particular software orhardware systems or microprocessor or microcomputer systems beingutilized.

In yet another embodiment, the disclosed methods may be partiallyimplemented in software that can be stored on a storage medium, executedon programmed general-purpose computer with the cooperation of acontroller and memory, a special purpose computer, a microprocessor, orthe like. In these instances, the systems and methods of this disclosurecan be implemented as program embedded on personal computer such as anapplet, JAVA® or CGI script, as a resource residing on a server orcomputer workstation, as a routine embedded in a dedicated measurementsystem, system component, or the like. The system can also beimplemented by physically incorporating the system and/or method into asoftware and/or hardware system.

Although the present disclosure describes components and functionsimplemented in the aspects, embodiments, and/or configurations withreference to particular standards and protocols, the aspects,embodiments, and/or configurations are not limited to such standards andprotocols. Other similar standards and protocols not mentioned hereinare in existence and are considered to be included in the presentdisclosure. Moreover, the standards and protocols mentioned herein andother similar standards and protocols not mentioned herein areperiodically superseded by faster or more effective equivalents havingessentially the same functions. Such replacement standards and protocolshaving the same functions are considered equivalents included in thepresent disclosure.

The present disclosure, in various aspects, embodiments, and/orconfigurations, includes components, methods, processes, systems and/orapparatus substantially as depicted and described herein, includingvarious aspects, embodiments, configurations embodiments,subcombinations, and/or subsets thereof. Those of skill in the art willunderstand how to make and use the disclosed aspects, embodiments,and/or configurations after understanding the present disclosure. Thepresent disclosure, in various aspects, embodiments, and/orconfigurations, includes providing devices and processes in the absenceof items not depicted and/or described herein or in various aspects,embodiments, and/or configurations hereof, including in the absence ofsuch items as may have been used in previous devices or processes, e.g.,for improving performance, achieving ease and\or reducing cost ofimplementation.

The foregoing discussion has been presented for purposes of illustrationand description. The foregoing is not intended to limit the disclosureto the form or forms disclosed herein. In the foregoing DetailedDescription for example, various features of the disclosure are groupedtogether in one or more aspects, embodiments, and/or configurations forthe purpose of streamlining the disclosure. The features of the aspects,embodiments, and/or configurations of the disclosure may be combined inalternate aspects, embodiments, and/or configurations other than thosediscussed above. This method of disclosure is not to be interpreted asreflecting an intention that the claims require more features than areexpressly recited in each claim. Rather, as the following claimsreflect, inventive aspects lie in less than all features of a singleforegoing disclosed aspect, embodiment, and/or configuration. Thus, thefollowing claims are hereby incorporated into this Detailed Description,with each claim standing on its own as a separate preferred embodimentof the disclosure.

Moreover, though the description has included description of one or moreaspects, embodiments, and/or configurations and certain variations andmodifications, other variations, combinations, and modifications arewithin the scope of the disclosure, e.g., as may be within the skill andknowledge of those in the art, after understanding the presentdisclosure. It is intended to obtain rights which include alternativeaspects, embodiments, and/or configurations to the extent permitted,including alternate, interchangeable and/or equivalent structures,functions, ranges or steps to those claimed, whether or not suchalternate, interchangeable and/or equivalent structures, functions,ranges or steps are disclosed herein, and without intending to publiclydedicate any patentable subject matter.

What is claimed is:
 1. A method of displaying a desktop on amulti-screen device, comprising: displaying a first application to afirst touchscreen of the multi-screen device; receiving a firstpredetermined input that represents an instruction to reveal a desktopon the first touchscreen of the multi-screen device; determining a firstdesktop to display on the first touchscreen; determining a seconddesktop to display on a second touchscreen of the multi-screen device;responding to the first predetermined input with an output that causesthe first application to move off of the first touchscreen in adirection away from the second touchscreen of the multi-screen device,such that the first application is in an inactive window stored in awindow stack on the multi-screen device, and the first desktop to bedisplayed on the first touchscreen and which also causes the seconddesktop to be at least one of (i) actually displayed on the secondtouchscreen and (ii) virtually displayed on the second touchscreen; andwherein the window stack comprises a logical arrangement of one or moreactive and two or more inactive windows, each window arranged by aunique stack position within the window stack and the inactive windowcomprises a window that is not being displayed.
 2. The method of claim1, wherein the first predetermined input comprises at least one of thefollowing: i) a user input gesture; ii) a combination of user inputgestures; iii) a memory output; iv) a response to a programmedcondition; and v) hardware timers.
 3. The method of claim 1, whereinresponding to the first predetermined input comprises at least one ofthe following: i) referring to a memory; ii) selecting an output; andiii) providing the output as an electrical signal.
 4. The method ofclaim 1, wherein the second desktop is virtually displayed by:registering in memory the second desktop for display by the secondtouchscreen; preventing the second desktop from displaying on the secondscreen touchscreen where the second touchscreen is determined to beinactive; and wherein access to the memory is provided such that thesecond desktop can be retrieved.
 5. The method of claim 1, wherein thesecond desktop is actually displayed by: registering in memory thesecond desktop for display by the second touchscreen where the secondtouchscreen is determined to be active; and displaying the seconddesktop on the second touchscreen.
 6. The method of claim 1, furthercomprising: receiving a second predetermined input after the firstpredetermined input, the second predetermined input representing aninstruction to navigate a plurality of desktops; discontinuing displayof the first desktop on the first touchscreen and storing the firstdesktop in a virtual desktop stack memory; replacing the first desktopon the first touchscreen with the second desktop from the secondtouchscreen for display on the first touchscreen; displaying a thirddesktop to be at least one of (i) actually displayed on the secondtouchscreen and (ii) virtually displayed on the second touchscreen. 7.The method of claim 6, wherein the third desktop is virtually displayedon the second touchscreen while the multi-screen device is in a closedstate.
 8. The method of claim 6, wherein the third desktop is actuallydisplayed on the second touchscreen while the multi-screen device is inan open state.
 9. The method of claim 1, wherein display rules arereferenced and followed according to: a) when both touchscreens areactive the first desktop is actually displayed on the first touchscreenand the second desktop is actually displayed on the second touchscreen;and b) when the second touchscreen is inactive the first desktop isactually displayed on the first touchscreen and the second desktop isvirtually displayed on the second touchscreen.
 10. A non-transitorycomputer-readable medium having stored thereon instructions that cause acomputing system to execute a method, the instructions comprising:instructions configured to display a first application to a firsttouchscreen of a multi-screen device; instructions configured to receivea first predetermined input that represents an instruction to reveal adesktop on the first touchscreen of the multi-screen device;instructions configured to determine a first desktop to display on thefirst touchscreen; instructions configured to determine a second desktopto display on a second touchscreen of the multi-screen device;instructions configured to respond to the first predetermined input withan output that causes the first application to move off of the firsttouchscreen in a direction away from the second touchscreen of themulti-screen device, such that the first application is in an inactivewindow stored in a window stack on the multi-screen device, and thefirst desktop to be displayed on the first touchscreen and which alsocauses the second desktop to be at least one of (i) actually displayedon the second touchscreen and (ii) virtually displayed on the secondtouchscreen; and wherein the window stack comprises a logicalarrangement of one or more active and two or more inactive windows, eachwindow arranged by a unique stack position within the window stack andthe inactive window comprises a window that is not being displayed. 11.The computer-readable medium of claim 10, wherein the first touchscreencorresponds to a primary screen and wherein the second touchscreencorresponds to a secondary screen.
 12. The computer-readable medium ofclaim 10, further comprising: instructions configured to receive asecond predetermined input that represents an instruction to move thesecond desktop from the second touchscreen to be displayed on the firsttouchscreen of the multi-screen device.
 13. The computer-readable mediumof claim 10, further comprising: instructions configured to determinewhether the multi-screen device is in an open or closed state;instructions configured to actually display the first desktop on thefirst touchscreen and actually display the second desktop on the secondtouchscreen when the multi-screen device is in the open state; andinstructions configured to actually display the first desktop on thefirst touchscreen and virtually display the second desktop on the secondtouchscreen when the multi-screen device is in the closed state.
 14. Thecomputer-readable medium of claim 10, further comprising: instructionsconfigured to determine whether the second touchscreen is active orinactive; instructions configured to actually display the first desktopon the first touchscreen and actually display the second desktop on thesecond touchscreen when both screens are active; and instructionsconfigured to actually display the first desktop on the firsttouchscreen and virtually display the second desktop on the secondtouchscreen when the first touchscreen is active and the secondtouchscreen is inactive.
 15. The computer-readable medium of claim 14,further comprising: instructions configured to receive a secondpredetermined input after the first predetermined input, the secondpredetermined input representing an instruction to navigate a pluralityof desktops; instructions configured to move the first desktop off thefirst touchscreen and store the first desktop in a virtual desktop stackmemory; instructions configured to replace the first desktop on thefirst touchscreen with the second desktop from the second touchscreenfor display on the first touchscreen; and instructions configured tointroduce a third desktop to be at least one of (i) actually displayedon the second touchscreen and (ii) virtually displayed on the secondtouchscreen.